import logging
import os
import subprocess

import utils
from main import PATH, PYTHON_EXEC, logger, LEVEL


class Stack:
    def __init__(self, name: str, path: str, port: int, url: str):
        self.name = name
        self.path = os.path.join(PATH, path)
        self.url = url
        self.port = port

        self.process = None

        if self.is_installed():
            self.update()
        else:
            self.check_for_broken_install()
            self.create_venv()
            self.install()

    def install(self):
        self.create_file('.installed', 'true')
        logger.info(f"Installed {self.name}")

    def is_installed(self):
        return self.file_exists('.installed')

    def check_for_broken_install(self):
        if not self.is_installed() and len(os.listdir(self.path)) > 0:
            logger.warning("Found files from a previous/borked/crashed installation, cleaning up...")
            self.bash(f"rm -rf {self.path}")
            self.create_dir('')

    def update(self, folder: str = 'webui'):
        if self.dir_exists(folder):
            logger.info(f"Updating {self.name}")
            self.git_pull(folder)
        else:
            logger.warning(f"Could not update {self.name} as {folder} does not exist")

    def uninstall(self):
        self.bash(f"rm -rf {self.path}")

    def start(self):
        pass

    def stop(self):
        pass

    def restart(self):
        self.stop()
        self.start()

    def status(self):
        pass

    # Python/Bash utils
    def create_venv(self):
        venv_path = os.path.join(self.path, 'venv')
        if not self.has_venv():
            logger.debug(f"Creating venv for {self.name}")
            self.bash(f"{PYTHON_EXEC} -m venv {venv_path} --system-site-packages")
            self.pip("install --upgrade pip")
        else:
            logger.debug(f"Venv already exists for {self.name}")

    def has_venv(self) -> bool:
        return self.dir_exists('venv')

    def pip_install(self, package: str | list, no_deps: bool = False):
        if isinstance(package, list):
            for p in package:
                self.pip(f"install -U {p} {'--no-deps' if no_deps else ''}")
        else:
            self.pip(f"install -U {package} {'--no-deps' if no_deps else ''}")

    def install_requirements(self, filename: str = 'requirements.txt'):
        self.pip(f"install -r {filename}")

    def pip(self, cmd: str, env=[], current_dir: str = None):
        self.bash(f"{' '.join(env)} {self.path}/venv/bin/pip {cmd}", current_dir)

    def python(self, cmd: str, env=[], current_dir: str = None):
        self.bash(f"{' '.join(env)} {self.path}/venv/bin/python {cmd}", current_dir)

    def bash(self, cmd: str, current_dir: str = None):
        cmd = f"cd {self.path if current_dir is None else os.path.join(self.path, current_dir)} && {cmd}"

        logger.debug(f"Running command: {cmd}")

        if LEVEL == logging.DEBUG:
            process = subprocess.Popen(cmd, shell=True)
            process.wait()
            if process.returncode != 0:
                raise Exception(f"Failed to run command: {cmd}")

        else:
            process = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
            out, err = process.communicate()

            if process.returncode != 0:
                logger.fatal(f"Failed to run command: {cmd}")
                logger.fatal(f"Error: {err.decode('utf-8')}")
                logger.fatal(f"Output: {out.decode('utf-8')}")
                raise Exception(f"Failed to run command: {cmd}")

    # Git utils
    def git_clone(self, url: str, branch: str = None, dest: str = None):
        self.bash(f"git clone {f"-b {branch}" if branch is not None else ''} {url} {'' if dest is None else dest}")

    def git_pull(self, repo_folder: str, force: bool = False):
        self.bash(f"git reset --hard HEAD {'&& git clean -f -d' if force else ''} && git pull", repo_folder)

    # Prebuilt utils
    def install_from_prebuilt(self, name):
        for prebuilt in utils.get_prebuilts():
            if prebuilt['name'].split("-")[0] == name:
                self.pip(f"install {prebuilt['browser_download_url']}")
                return

    # File utils
    def create_file(self, name, content):
        with open(os.path.join(self.path, name), 'w') as f:
            f.write(content)

    def create_dir(self, name):
        logger.debug(f"Creating directory {name}")
        os.makedirs(os.path.join(self.path, name), exist_ok=True)

    def remove_file(self, name):
        logger.debug(f"Removing file {name}")
        os.remove(os.path.join(self.path, name))

    def remove_dir(self, name):
        logger.debug(f"Removing directory {name}")
        os.rmdir(os.path.join(self.path, name))

    def move_file_or_dir(self, src, dest):
        logger.debug(f"Moving file/dir {src} to {dest}")
        os.rename(os.path.join(self.path, src), os.path.join(self.path, dest))

    def move_all_files_in_dir(self, src, dest):
        logger.debug(f"Moving all files in directory {src} to {dest}")
        for file in os.listdir(os.path.join(self.path, src)):
            os.rename(os.path.join(self.path, src, file), os.path.join(self.path, dest, file))

    def file_exists(self, name):
        return os.path.exists(os.path.join(self.path, name))

    def dir_exists(self, name):
        return os.path.exists(os.path.join(self.path, name))

    def remove_line_in_file(self, contains: str | list, file: str):
        logger.debug(f"Removing lines containing {contains} in {file}")

        if isinstance(contains, list):
            for c in contains:
                self.bash(f"sed -i '/{c}/d' {file}")
        else:
            self.bash(f"sed -i '/{contains}/d' {file}")

    def replace_line_in_file(self, match: str, replace: str, file: str):
        logger.debug(f"Replacing lines containing {match} with {replace} in {file}")
        self.bash(f"sed -i 's/{match}/{replace}/g' {file}")